For now, LumaLink is limited to Luma app access only, and does not work with the Web UI. We are working on a Luma VMS app which will also support LumaLink. Luma VMS will provide full access to the system for configuration, live/recorded video, and exporting video streams.
Yes, this should work on all networks, with no special requirements on the setup end. Some networks may be more difficult for LumaLink to penetrate, and could cause lower performance or prevent some features from working correctly. If so, you may need to use port forwarding in those cases.
LumaLink works with all ISPs that we have tested so far. In fact, LumaLink works in some cases where port forwarding does not work without a static WAN IP address, saving the cost of a monthly fee from the ISP.